On 05/20/2009 02:44 AM, Kiran wrote:
BUG: scheduling while atomic: stapio/0x00000001/26142, CPU#3
[...]
[<ffffffff812a2dea>] cpufreq_unregister_notifier+0x35/0x5c
[<ffffffffa02e0a1f>] _stp_kill_time+0xb6/0xbd [stap_246f93f30a500769142af9987624737a_5072]
[<ffffffffa02e1749>] probe_1391+0x3c/0xa8 [stap_246f93f30a500769142af9987624737a_5072]
[<ffffffffa02e2621>] enter_end_probe+0x14a/0x1e3 [stap_246f93f30a500769142af9987624737a_5072]
enter_end_probe will call preempt_disable, and apparently the call path
from cpufreq_unregister_notifier can sleep. Is this true only of the RT
kernel?